HG/T 2743.2-1996 Specification for the preparation of pesticide compound wettable powder product standards
Some standard content:
HG/T2743.2—1996
The compound preparations scientifically mixed with different pesticides can greatly improve the efficacy, reduce toxicity and delay the emergence of resistance. Therefore, the development and application of compound preparations of pesticides are important ways to use pesticides rationally and effectively prevent and eliminate diseases, insects and weeds. At present, there are hundreds of compound preparations of pesticides in my country, but many varieties lack scientific experimental basis. The preparation of compound preparation standards is mostly chaotic and of varying levels. In order to standardize the preparation format of pesticide compound preparations and improve the standard level, this standard is formulated on the basis of GB/T1.1--1993 "Guidelines for Standardization Work Unit 1: Drafting and Expression Rules of Standards Part 1: Basic Provisions for Standard Preparation" and the industry standard ZBG23001--86 "Principles and Procedures for Naming Common Names of Pesticides" of the Ministry of Chemical Industry, and on the basis of HG/T 2467 "Format for Preparation of Pesticide Product Standards". Appendix A of this standard is the appendix of the standard.
This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Shenyang Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Shenyang Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are: Hou Yukai, Wang Xuecheng, Lou Shaowei, Yang Jian, Zhao Xinxin. 292
HG/T 2743. 2--1996
Contents to be included in the preface of pesticide compound preparation product standards 1. Special part information
The number and degree of adoption of international standards or foreign advanced standards, the differences and reasons with the adopted standards, the purpose and basis of drafting the standard: the test comparison results of the toxicity, toxicity and efficacy of the compound preparation and the active ingredients of the compound preparation should be provided, and the degree of improvement in efficacy and reduction in toxicity of the compound preparation should be explained; for revised standards, the key points of revision should be explained; requirements for the transition period of standard implementation: the explanation that this standard leads to the abolition or replacement of all or part of other standard documents; indicating which appendices are standard appendices and which are indicative appendices. 2. Basic part information
This standard was proposed by.
This standard is under the jurisdiction of the relevant department.
Drafting unit of this standard: When necessary, the responsible drafting unit and participating drafting units may be specified. Main drafters of this standard: Generally no more than 5 people. 293
Chemical Industry Standard of the People's Republic of China
Standard for the preparation of pesticide compound wettable powder product standards HG/T2743.2—1996
This standard specifies the standard for the preparation of pesticide compound wettable powder product standards, and is applicable to the preparation of corresponding national standards, industry standards, local standards and enterprise standards for pesticide compound wettable powder products. Other names, structural formulas and basic physicochemical parameters of each active ingredient in this product are as follows: a) (Generic name of active ingredient 1)
ISO generic name:
Trade name:
CIPAC digital code:
Chemical name:
Structural formula:
Empirical formula:
Relative molecular mass (calculated according to 19×× international relative atomic mass): Biological activity·(insecticide, acaricide, fungicide, herbicide) Melting point·℃
Boiling point.℃
Vapor pressure (20℃):·Pa
Solubility (g/L, 20℃):
Stability: (stability to acid, alkali, light, heat, etc., half-life) b) (Generic name of active ingredient 2)
Contents are the same as a.
c) ……… (Generic name of active ingredient 3) Contents are the same as a.
1 Scope
This standard specifies the requirements, test methods, and marking, labeling, packaging, storage and transportation of (name of compound preparation) wettable powder. This standard applies to (name of compound preparation) wettable powder made from (common name of active ingredient 1)·(common name of active ingredient 2)·common name of active ingredient 3) technical materials, suitable adjuvants and fillers that meet the standards. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and all parties using this standard should explore the possibility of using the latest versions of the following standards. The order of arrangement of referenced standards is domestic first and then foreign; standards of all levels should be arranged step by step, with national standards first and then industry standards; standards of the same level are arranged in the order of standard numbers; standards of different industries are arranged in alphabetical order according to standard codes. GB/T601-88 Preparation of standard solutions for titration analysis (volume analysis) of chemical reagents GB/T1601-93 Method for determination of pH value of pesticides
GB/T1604--1995 Acceptance rules for commercial pesticides Approved by the Ministry of Chemical Industry of the People's Republic of China on April 8, 1996 294
Implemented on September 1, 1996
HG/T2743.21996
GB1605-79 (89) Sampling methods for commercial pesticides GB3796-83 General rules for pesticide packaging
GB4946-85 Terminology for gas chromatography
GB/T 5451-86 Determination method of wettability of pesticide wettable powder GB/T14825-93 Determination method of suspension rate of pesticide wettable powder GB/T16150-1995 Determination method of fineness of pesticide powder and wettable powder HG/T2467-93 Format for writing pesticide product standards HG/T2743.1-1996 Specification for writing pesticide compound emulsifiable concentrate product standards ZBG23001--86 Principles and procedures for naming common names of pesticides 3
3.1 Appearance: loose powder with uniform composition and no lumps. 3.2
· (Name of compound preparation) Wettable powder should meet the requirements of Table 1. Table 1 (Name of compound preparation) wettable powder control items Index items
(Generic name of active ingredient 1) content, %
…(Generic name of active ingredient 2) content, %
…(Generic name of active ingredient 3) content, %(Name of harmful impurities) content, %
pH range
Suspension rate, %
Wetting time, s
Fineness (through 44 μm test sieve), %
Accelerated storage test
(or specified range)
(or specified range)
(or specified range)
The listed items are not exhaustive, nor are they required to be included in all pesticide compound wettable powder standards. They can be increased or decreased according to the specific conditions of different compound pesticide products.
2 Accelerated storage test, at least once every…month. 4 Test method
4.1 Sampling
The test is carried out in accordance with the method of "sampling of powders and wettable powders" in GB/T1605. The number of packages to be sampled is determined by the random number table method; the final sampling volume should generally be no less than 250g.
4.2 Identification test
Prepared with reference to 4.2 in HG/T2743.1.
4.3 Determination of the content of…(Generic name of active ingredient 1) (taking the wide-bore capillary gas chromatography internal standard method as an example) 4.3.1 Method summary
The sample is dissolved in…, and…· is used as the internal standard. A quartz capillary column coated with ·(stationary liquid), a split (splitless) injection device and a detector are used to separate and determine the ·(generic name) in the sample by capillary gas chromatography. 4.3.2 Reagents and solutions
Solvent (specific name);
(Generic name of active ingredient 1) Standard sample: known content, ≥%; Internal standard solution·Weigh…(internal standard).g, dissolve and dilute to mL with…(solvent), mix well, and seal for storage. 4.3.3 Instruments
Gas chromatograph: with detector, split/splitless device (and automatic injection system); capillary column·mXmm (id) fused silica column, inner wall coated with . (fixed liquid), film thickness \μm; injection system: with split (or splitless) injection device and fused silica lining. Split ratio,
Chromatographic data processor.
4.3.4 Capillary gas chromatography operating conditions
Temperature (C): column chamber, vaporization chamber·, detector chamber··Gas flow rate (mL/min) carrier gas (H2, or He, N)., carrier gas (supplemented)., hydrogen·, air. .. Retention time (with typical capillary gas chromatogram) min)·(common name)·, internal standard. The above operating parameters are typical and can be adjusted appropriately according to the characteristics of the instrument in order to obtain the best effect. 4.3.5 Determination steps
4.3.5.1 Preparation of standard solution
Write according to the specific preparation method. www.bzxz.net
4.3.5.2 Preparation of sample solution
Write according to the specific preparation method.
4.3.5.3 System balance
Inject 1μuL internal standard solution and sample solution (without internal standard) into the gas spectrometer in sequence to check for interference peaks from impurities. Inject several needles of standard solution to balance the system. Set the integration parameters based on the chromatogram information obtained. 4.3.5.4 Determination
Under the above operating conditions, continuously inject several needles of standard solution, calculate the repeatability of the relative response value of each needle, and when the relative response value of two adjacent needles changes less than %, perform the determination in the order of standard solution, sample solution, sample solution, and standard solution. 4.3.6 Calculation
Average the ratio of the peak area (peak height) of the two needles of sample solution and the two needles of standard solution before and after the sample to the peak area (peak height) of the internal standard. ...(Generic name of active ingredient 1) mass percentage X, calculated according to formula (1): Xi = r2: mi.P
Wherein: ri---
The average value of the ratio of the peak area (peak height) of ·(Generic name of active ingredient 1) to the internal standard in the standard solution; r2---The average value of the ratio of the peak area (peak height) of *(Generic name of active ingredient 1) to the internal standard in the sample solution; mi
The mass of the standard sample of ·(Generic name of active ingredient 1), g; -The mass of the sample, g;
The mass percentage of (Generic name of active ingredient 1) in the standard sample. It is also possible to calculate the correction factor f first and then calculate the active ingredient content in the sample according to the provisions of GB/T4946. 4.3.7 Allowable difference
The difference between the results of two parallel determinations shall not be greater than ...%. 4.4 The determination of the content of ………·(Generic name of active ingredient 2) shall be written in the same determination method format as that in HG/T2467 and this standard. 4.5
(Generic name of active ingredient 3) content determination 296
HG/T 2743. 2--1996
Written in accordance with the same determination method format in HG/T2467 and this standard. 4.6...(name of harmful impurities) content determination is written according to the specific determination method adopted. 4.7 pH value determination
Performed in accordance with GB/T1601.
4.8 Suspension rate determination
Performed in accordance with GB/T14825 (the specific operation steps such as sample weight and drying or extraction should also be stated). 4.9 Wetting time
Performed in accordance with GB/T5451.
4.10 Fineness determination
Performed in accordance with GB/T16150 wet sieving method.
4.11 Accelerated Storage Test
4.11.1 Summary of Method
Through the pressurized hot storage test, the product is aged rapidly and the changes in the performance of the product stored at room temperature are predicted. 4.11.2 Apparatus
Beaker, 250mL, inner diameter 6.0～6.5cm, round block: the outer layer is anticorrosive, just fit into the beaker, the round block can generate a uniform pressure of 2.45kPa. 4.11.3 Test Steps
Put 20g of the sample into the beaker without any pressure, so that it is spread into a smooth and uniform layer of equal thickness. Press the round block on the sample, place the beaker in an oven, and store it at ℃ for d. Take out the beaker, take out the round block, put it in a desiccator, let the sample cool to room temperature, and complete the determination of items such as the content of active ingredients and suspension rate within 24h (when writing specific product standards, the judgment principle for the qualified accelerated storage test should be specified). 4.12 Inspection and acceptance of products
Should comply with the relevant provisions of GB/T1604. For the processing of limit values, the rounded value comparison method shall be adopted. 5 Marking, labeling, packaging, storage and transportation
5.1·(Name of compound preparation) The marking, labeling and packaging of wettable powder shall comply with the relevant provisions of GB3796, and shall have the production license (production permit) number and trademark.
5.2 It shall be compiled based on the specific packaging regulations of the comprehensive production and processing plants. 5.3 Other forms of packaging may be used according to user requirements or ordering agreements, but they must comply with the relevant provisions of GB3796. 5.4 Packages should be stored in ventilated and dry warehouses. 5.5 During storage and transportation, strictly prevent moisture and sunlight, do not mix with food, seeds, and feed, avoid contact with skin and eyes, and prevent inhalation through the mouth and nose. 5.6 Safety: In addition to the eye-catching toxicity mark, the instructions for use or packaging containers should also include toxicity instructions, precautions for use, symptoms of poisoning, detoxification methods and first aid measures.
5.7 Warranty period: Under the specified storage and transportation conditions, the warranty period of... (name of compound preparation) wettable powder is at least two years from the date of production. During the warranty period,
HG/T2743.2-1996
Appendix A
(Appendix to the standard)
Principles for naming common names of pesticide compound preparations According to Article 1.2 of ZBG23001-86 "Principles and Procedures for Naming Common Names of Pesticides", "The common name of pesticide preparations (single or mixed) should include three parts, namely the mass percentage of the active ingredient, the common name of the active ingredient and the dosage form. The common name of the mixed preparation can be composed of the prefixes or pronouns of the common names of each active ingredient." The common name of the pesticide compound preparation shall be a combination of the following three parts: The naming of the name is divided into three parts: the total content of each active ingredient in the compound preparation [mass percentage or g/L (20℃)], the common name of the compound preparation, which is composed of the prefixes (or the first few characters) of the common names of each active ingredient, and dots are inserted between the prefixes (or the first few characters) to reflect the number of components of the compound preparation; the order of each active ingredient should generally be determined by its content, with the higher one in front and the lower one in the back; it can also be ranked according to its contribution to the efficacy, with the one that contributes the most to the efficacy being ranked in front; the third is the dosage form of the compound preparation, such as powder, emulsifiable concentrate, wettable powder, aqueous suspension, etc. For example, 3% methyl phthalate powder, 40% dimethoate emulsifiable concentrate, 20% cypermethrin emulsifiable concentrate, 50% polysulfur suspension, etc. If a synergist is added to the compound preparation, the synergist is not counted as an active ingredient, and the proportion it occupies does not enter the total content of the active ingredients. 2983 Test steps
Put 20g of sample into a beaker without any pressure, so that it can be spread into a smooth and uniform layer of equal thickness. Press the ball on the sample, place the beaker in an oven, and store it at ℃ for d. Take out the beaker, take out the ball, put it in a desiccator, let the sample cool to room temperature, and complete the determination of items such as active ingredient content and suspension rate within 24h (when writing specific product standards, the judgment principle for passing the accelerated storage test should be specified). 4.12 Product inspection and acceptance
Should comply with the relevant provisions of GB/T1604. For limit numerical processing, the rounded value comparison method should be used. 5 Marking, labeling, packaging, storage and transportation
5.1·(Name of compound preparation) The marking, labeling and packaging of wettable powders shall comply with the relevant provisions of GB3796, and shall have the production license (production permit) number and trademark.
5.2 Comprehensively write the specific packaging regulations of the production and processing plants. 5.3 Other forms of packaging may be used according to user requirements or order agreements, but they must comply with the relevant provisions of GB3796. 5.4 Packages should be stored in ventilated and dry warehouses. 5.5 During storage and transportation, strictly prevent moisture and sunlight, do not mix with food, seeds, and feed, avoid contact with skin and eyes, and prevent inhalation through the mouth and nose. 5.6 Safety: In addition to the eye-catching toxicity mark, the instruction manual or packaging container should also have toxicity instructions, precautions for use, symptoms of poisoning, detoxification methods and first aid measures.
5.7 Warranty period: Under the specified storage and transportation conditions, the warranty period of ... (name of compound preparation) wettable powder is at least two years from the date of production. During the warranty period,
HG/T2743.2-1996
Appendix A
(Appendix to the standard)
Principles for naming common names of pesticide compound preparations According to the basic principle of ZBG23001-86 "Principles and Procedures for Naming Common Names of Pesticides" Article 1.2 "The common name of pesticide preparations (single or mixed) should include three parts, namely, the mass percentage of the active ingredient, the common name of the active ingredient and the dosage form. The common name of the mixed preparation can be composed of the prefixes or pronouns of the common names of the active ingredients". The naming of the name is divided into three parts: the total content of each active ingredient in the compound preparation [mass percentage or g/L (20℃)], the common name of the compound preparation, which is composed of the prefixes (or the first few characters) of the common names of each active ingredient, and dots are inserted between the prefixes (or the first few characters) to reflect the number of components of the compound preparation; the order of each active ingredient should generally be determined by its content, with the higher one in front and the lower one in the back; it can also be ranked according to its contribution to the efficacy, with the one that contributes the most to the efficacy being ranked in front; the third is the dosage form of the compound preparation, such as powder, emulsifiable concentrate, wettable powder, aqueous suspension, etc. For example, 3% methyl phthalate powder, 40% dimethoate emulsifiable concentrate, 20% cypermethrin emulsifiable concentrate, 50% polysulfur suspension, etc. If a synergist is added to the compound preparation, the synergist is not counted as an active ingredient, and the proportion it occupies does not enter the total content of the active ingredients. 2983 Test steps
Put 20g of sample into a beaker without any pressure, so that it can be spread into a smooth and uniform layer of equal thickness. Press the ball on the sample, place the beaker in an oven, and store it at ℃ for d. Take out the beaker, take out the ball, put it in a desiccator, let the sample cool to room temperature, and complete the determination of items such as active ingredient content and suspension rate within 24h (when writing specific product standards, the judgment principle for passing the accelerated storage test should be specified). 4.12 Product inspection and acceptance
Should comply with the relevant provisions of GB/T1604. For limit numerical processing, the rounded value comparison method should be used. 5 Marking, labeling, packaging, storage and transportation
5.1·(Name of compound preparation) The marking, labeling and packaging of wettable powders shall comply with the relevant provisions of GB3796, and shall have the production license (production permit) number and trademark.
5.2 Comprehensively write the specific packaging regulations of the production and processing plants. 5.3 Other forms of packaging may be used according to user requirements or order agreements, but they must comply with the relevant provisions of GB3796. 5.4 Packages should be stored in ventilated and dry warehouses. 5.5 During storage and transportation, strictly prevent moisture and sunlight, do not mix with food, seeds, and feed, avoid contact with skin and eyes, and prevent inhalation through the mouth and nose. 5.6 Safety: In addition to the eye-catching toxicity mark, the instruction manual or packaging container should also have toxicity instructions, precautions for use, symptoms of poisoning, detoxification methods and first aid measures.
5.7 Warranty period: Under the specified storage and transportation conditions, the warranty period of ... (name of compound preparation) wettable powder is at least two years from the date of production. During the warranty period,
HG/T2743.2-1996
Appendix A
(Appendix to the standard)
Principles for naming common names of pesticide compound preparations According to the basic principle of ZBG23001-86 "Principles and Procedures for Naming Common Names of Pesticides" Article 1.2 "The common name of pesticide preparations (single or mixed) should include three parts, namely, the mass percentage of the active ingredient, the common name of the active ingredient and the dosage form. The common name of the mixed preparation can be composed of the prefixes or pronouns of the common names of the active ingredients". The naming of the name is divided into three parts: the total content of each active ingredient in the compound preparation [mass percentage or g/L (20℃)], the common name of the compound preparation, which is composed of the prefixes (or the first few characters) of the common names of each active ingredient, and dots are inserted between the prefixes (or the first few characters) to reflect the number of components of the compound preparation; the order of each active ingredient should generally be determined by its content, with the higher one in front and the lower one in the back; it can also be ranked according to its contribution to the efficacy, with the one that contributes the most to the efficacy being ranked in front; the third is the dosage form of the compound preparation, such as powder, emulsifiable concentrate, wettable powder, aqueous suspension, etc. For example, 3% methyl phthalate powder, 40% dimethoate emulsifiable concentrate, 20% cypermethrin emulsifiable concentrate, 50% polysulfur suspension, etc. If a synergist is added to the compound preparation, the synergist is not counted as an active ingredient, and the proportion it occupies does not enter the total content of the active ingredients. 298
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